Monitoring and Controlling Mastitis on Ontario Dairy Farms

The frequency of use and the marginal costs and marginal value products of mastitis control practices on somatic cell count (SCC) and milk yield are investigated. A survey of current management practices is combined with Dairy Herd Improvement production information to determine the relationships between milk yield, SCC, management practices, and production and producer characteristics under field conditions. The relationships are modeled and compared at the cow and herd level. A moment-generating approach is used in the herd model to determine which, if any, practices are risk reducing. The SCC for an individual cow is a better indicator of milk production lost due to mastitis than is a bulk tank SCC. Most recommended mastitis control practices are estimated to be economically beneficial, but some common practices are found not to be economical, and questions are raised about dry cow treatment. On a examiné la fréquence à laquelle on recourt aux pratiques de lutte contre la mammite, de même que les couts et les avantages marginaux de ces dernières en ce qui concerne la numération des cellues somatiques et le rendement laitier. On a combiné une enquête sur les pratiques zootechniques actuelles aux renseignements sur la production extraits du Programme d'amélioration des troupeaux laitiers en vue de déterminer les relations qui existent entre le rendement laitier, la numération des cellules somatiques, la conduite du troupeau ainsi que les caractéristiques associées à la production et aux producteurs, sur le terrain. On a ensuite modélisé ces relations et on les a compareées entre les animaux et les troupeaux. Pour le modèle touchant les troupeaux, on s'est servi d'une approche générant des moments, pour déterminer si une pratique quelconque diminuait les risques. La numération des cellules somatiques chez la vache est un meilleur indicateur du volume de lait perdu à la suite de la mammite que la numération des cellules somatiques dans la citerne. La plupart des méthodes de lutte contre la mammite recommendées offrent un avantage économique, mais certaines pratiques courantes ont l'effet contraire et on s'interroge sur l'utilité de traiter les vaches taries.     

What Our Students Should Know: Perspectives from Business and Academia

Perspectives from business and academia on the relative importance of various skills and attributes were compared. The perspective from academia came from the University of Guelph learning objectives and the AEB simple and complex skills required for undergraduate majors. A survey of Canadian agribusiness firms, including governmental agencies, provided the business perspective. Different types and sizes of businesses were consistent in ranking the relative importance of the various skills and attributes. The rankings by business were also consistent with the hierachial learning objectives from the University of Guelph and the disciplinary skills from the AEB. The hypothesis that business and academia are more convergent than divergent as to what our students should know is supported by these results.
Both business and academia rank communication skills highly. Business ranks personal qualities slightly higher than communication skills, but universities recognize that they can only screen for personal qualities, as opposed to the skills that they can enhance through education. Relatively low rankings of technical, computer and quantitative skills and experience should not be interpreted to mean they are unimportant, but rather that they are necessary but not sufficient for entry-level employees to succeed in agribusiness firms.     

The comparative test in marketing research and theory development

The comparative test has traditionally been viewed as a theoretical and methodological technique that was useful for making rapid advances in the development of marketing as a science. Enthusiasm for the comparative test is rooted in logical empiricism. Unexplored implications for the use of the comparative test in marketing are offered from the sophisticated methodological falsificationist and the social constructionist perspectives. A proposed solution to the problems that are created from using the comparative test in the traditional manner is presented. The solution proposed is relevant to methodology in science in general and should aid research and the development of theory in marketing.     

The Choice of Accounting Policy In Japan

The purpose of this study is to investigate factors which potentially influence Japanese managers' choices of accounting policies. Several factors have been posed to affect the choice of accounting policy of U.S. managers (e.g., Watts and Zimmerman's (1986) positive accounting theory). However, the general business characteristics of the U.S. environment differ, sometimes drastically, from those in Japan. Factors affecting the choice of accounting policy in the U.S. may not similarly affect the choice of accounting policy in Japan. At the same time, new factors may be identified in the Japanese business environment.
Income strategy models are developed for each firm according to the type (income increasing or income decreasing) of accounting policies employed. The results suggest that both the size and debt/equity hypotheses are significant, even for keiretsu firms. These results are surprising given (1) the close relationship between firms and the government, (2) regulations of the commercial code which serve to protect the interests of debtholders, and (3) the tight relationship between banks and firms within keiretsu groups which protects firms from bankruptcy and takeover. Variables representing firms' effective tax rate, ability to finance operations internally, and foreign political costs are also shown to significantly affect Japanese managers' choices of accounting policy. The bonus hypothesis is not significant in the Japanese environment. Furthermore, the choice of accounting policy is explained more by individual firm characteristics than by keiretsu membership or industry membership.     

Corporate Social Responsibility in Management Research: Focus,Nature, Salience and Sources of Influence*

abstract In this paper we investigate the status of corporate social responsibility (CSR) research within the management literature. In particular, we examine the focus and nature of knowledge, the changing salience of this knowledge and the academic influences on the knowledge. We present empirical evidence based on publication and citation analyses of research published from 1992 to 2002. Our results demonstrate that, for CSR research published in management journals, the most popular issues investigated have been environmental and ethics; the empirical research has been overwhelmingly of a quantitative nature; the theoretical research has been primarily non‐normative; the field is driven by agendas in the business environment as well as by continuing scientific engagement; and the single most important source of references for CSR articles was the management literature itself.     

Overestimating Oneself and Overlooking the Law: Psychological Supports for Employment at Will

This article studies the hypotheses that people tend to underrate other people's work motivation and skills relative to their own, and further tend to be unaware of the legal status of employment at will in contemporary U.S. law. The theoretical part of the article describes psychological bases for the hypothesized tendencies and explains how they can be expected to foster acquiescence to employment at will and high employment insecurity. The empirical portion of the article describes and discusses a survey of M.B.A. students that probed their knowledge of and attitudes toward U.S. employment law, along with their attitudes toward employment insecurity and work motivation. Consistent with the hypotheses, the study found widespread lack of knowledge about the legal status of employment at will, as well as a tendency toward overrating one's own work motivation relative to others and a tendency toward taking higher risks of termination when they were presented as controllable on an individual, though not a group, basis.     

A new clustering methodology for the analysis of sorted or categorized stimuli

This paper introduces a new stochastic clustering methodology devised for the analysis of categorized or sorted data. The methodology reveals consumers' common category knowledge as well as individual differences in using this knowledge for classifying brands in a designated product class. A small study involving the categorization of 28 brands of U.S. automobiles is presented where the results of the proposed methodology are compared with those obtained from KMEANS clustering. Finally, directions for future research are discussed. Wayne S. DeSarbo is the S. S. Kresge Distinguished Professor of Marketing and Statistics, and Michael D. Johnson is Associate Professor of Marketing, both at the University of Michigan's School of Business Administration. Kamel Jedidi is Assistant Professor of Marketing at Columbia University's Graduate School of Business. The authors gratefully acknowledge DuPont Incorporated for providing financial support for this research.     

A simultaneous model of workplace and residential location incorporating job search

The paper develops a model of spatial job search to provide a theory of workplace location with respect to a predetermined place of residence which, the paper argues, is needed to complement the theory of residential location from a predetermined workplace. By concentrating on the role of the skill level of the job seeker, the model distinguishes predictions of the workplace location based on search from those based on commuting considerations. Household survey data from Greater London is analyzed to support the propositions of the search model in the determination of the relationship between the workplace and the household location.     

The marketing concept in perspective

A re-evaluation of the marketing concept appears to be in the making. The focus of research designed to facilitate this re-evaluation is likely to be of considerable importance to the future development of marketing theory. Research designed to better define the role and scope of the marketing concept seems to offer the most promise. Such research would be an aid to determining where the marketing concept should fit into a comprehensive theory of marketing. Limitations of the marketing concept are well documented in the literature suggesting a need for a broader framework of marketing theory. It seems imperative that academicians accept the responsibility for developing a more comprehensive general theory of marketing, one relevant to both the micro and macro aspects of a functioning system. Such flexibility seems to be a minimal requirement.